Go to most recent revision | Details | Last modification | View Log | RSS feed
Rev | Author | Line No. | Line |
---|---|---|---|
4349 | Serge | 1 | /* |
2 | * Copyright (c) 2000, 2001, 2002 Fabrice Bellard |
||
3 | * |
||
4 | * This file is part of FFmpeg. |
||
5 | * |
||
6 | * FFmpeg is free software; you can redistribute it and/or |
||
7 | * modify it under the terms of the GNU Lesser General Public |
||
8 | * License as published by the Free Software Foundation; either |
||
9 | * version 2.1 of the License, or (at your option) any later version. |
||
10 | * |
||
11 | * FFmpeg is distributed in the hope that it will be useful, |
||
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
||
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
||
14 | * Lesser General Public License for more details. |
||
15 | * |
||
16 | * You should have received a copy of the GNU Lesser General Public |
||
17 | * License along with FFmpeg; if not, write to the Free Software |
||
18 | * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
||
19 | */ |
||
20 | |||
21 | #ifndef AVUTIL_CPU_H |
||
22 | #define AVUTIL_CPU_H |
||
23 | |||
24 | #include "attributes.h" |
||
25 | |||
26 | #define AV_CPU_FLAG_FORCE 0x80000000 /* force usage of selected flags (OR) */ |
||
27 | |||
28 | /* lower 16 bits - CPU features */ |
||
29 | #define AV_CPU_FLAG_MMX 0x0001 ///< standard MMX |
||
30 | #define AV_CPU_FLAG_MMXEXT 0x0002 ///< SSE integer functions or AMD MMX ext |
||
31 | #define AV_CPU_FLAG_MMX2 0x0002 ///< SSE integer functions or AMD MMX ext |
||
32 | #define AV_CPU_FLAG_3DNOW 0x0004 ///< AMD 3DNOW |
||
33 | #define AV_CPU_FLAG_SSE 0x0008 ///< SSE functions |
||
34 | #define AV_CPU_FLAG_SSE2 0x0010 ///< PIV SSE2 functions |
||
35 | #define AV_CPU_FLAG_SSE2SLOW 0x40000000 ///< SSE2 supported, but usually not faster |
||
36 | ///< than regular MMX/SSE (e.g. Core1) |
||
37 | #define AV_CPU_FLAG_3DNOWEXT 0x0020 ///< AMD 3DNowExt |
||
38 | #define AV_CPU_FLAG_SSE3 0x0040 ///< Prescott SSE3 functions |
||
39 | #define AV_CPU_FLAG_SSE3SLOW 0x20000000 ///< SSE3 supported, but usually not faster |
||
40 | ///< than regular MMX/SSE (e.g. Core1) |
||
41 | #define AV_CPU_FLAG_SSSE3 0x0080 ///< Conroe SSSE3 functions |
||
42 | #define AV_CPU_FLAG_ATOM 0x10000000 ///< Atom processor, some SSSE3 instructions are slower |
||
43 | #define AV_CPU_FLAG_SSE4 0x0100 ///< Penryn SSE4.1 functions |
||
44 | #define AV_CPU_FLAG_SSE42 0x0200 ///< Nehalem SSE4.2 functions |
||
45 | #define AV_CPU_FLAG_AVX 0x4000 ///< AVX functions: requires OS support even if YMM registers aren't used |
||
46 | #define AV_CPU_FLAG_XOP 0x0400 ///< Bulldozer XOP functions |
||
47 | #define AV_CPU_FLAG_FMA4 0x0800 ///< Bulldozer FMA4 functions |
||
48 | // #if LIBAVUTIL_VERSION_MAJOR <52 |
||
49 | #define AV_CPU_FLAG_CMOV 0x1001000 ///< supports cmov instruction |
||
50 | // #else |
||
51 | // #define AV_CPU_FLAG_CMOV 0x1000 ///< supports cmov instruction |
||
52 | // #endif |
||
53 | #define AV_CPU_FLAG_AVX2 0x8000 ///< AVX2 functions: requires OS support even if YMM registers aren't used |
||
54 | |||
55 | #define AV_CPU_FLAG_ALTIVEC 0x0001 ///< standard |
||
56 | |||
57 | #define AV_CPU_FLAG_ARMV5TE (1 << 0) |
||
58 | #define AV_CPU_FLAG_ARMV6 (1 << 1) |
||
59 | #define AV_CPU_FLAG_ARMV6T2 (1 << 2) |
||
60 | #define AV_CPU_FLAG_VFP (1 << 3) |
||
61 | #define AV_CPU_FLAG_VFPV3 (1 << 4) |
||
62 | #define AV_CPU_FLAG_NEON (1 << 5) |
||
63 | |||
64 | /** |
||
65 | * Return the flags which specify extensions supported by the CPU. |
||
66 | * The returned value is affected by av_force_cpu_flags() if that was used |
||
67 | * before. So av_get_cpu_flags() can easily be used in a application to |
||
68 | * detect the enabled cpu flags. |
||
69 | */ |
||
70 | int av_get_cpu_flags(void); |
||
71 | |||
72 | /** |
||
73 | * Disables cpu detection and forces the specified flags. |
||
74 | * -1 is a special case that disables forcing of specific flags. |
||
75 | */ |
||
76 | void av_force_cpu_flags(int flags); |
||
77 | |||
78 | /** |
||
79 | * Set a mask on flags returned by av_get_cpu_flags(). |
||
80 | * This function is mainly useful for testing. |
||
81 | * Please use av_force_cpu_flags() and av_get_cpu_flags() instead which are more flexible |
||
82 | * |
||
83 | * @warning this function is not thread safe. |
||
84 | */ |
||
85 | attribute_deprecated void av_set_cpu_flags_mask(int mask); |
||
86 | |||
87 | /** |
||
88 | * Parse CPU flags from a string. |
||
89 | * |
||
90 | * The returned flags contain the specified flags as well as related unspecified flags. |
||
91 | * |
||
92 | * This function exists only for compatibility with libav. |
||
93 | * Please use av_parse_cpu_caps() when possible. |
||
94 | * @return a combination of AV_CPU_* flags, negative on error. |
||
95 | */ |
||
96 | attribute_deprecated |
||
97 | int av_parse_cpu_flags(const char *s); |
||
98 | |||
99 | /** |
||
100 | * Parse CPU caps from a string and update the given AV_CPU_* flags based on that. |
||
101 | * |
||
102 | * @return negative on error. |
||
103 | */ |
||
104 | int av_parse_cpu_caps(unsigned *flags, const char *s); |
||
105 | |||
106 | /** |
||
107 | * @return the number of logical CPU cores present. |
||
108 | */ |
||
109 | int av_cpu_count(void); |
||
110 | |||
111 | #endif /* AVUTIL_CPU_H */><>><>><>><>><>><>>>>>52 |